MX-6 L4-2184cc 2.2L SOHC Turbo F2 (1989)
Oxygen Sensor: Testing and Inspection
1.
Warm up the engine and run it at idle.
2.
Disconnect the oxygen sensor wiring harness connector.
Testing Oxygen Sensor
3.
Connect a voltmeter between the oxygen sensor connector (oxygen sensor side) and ground.
4.
Run the engine at 4,500 rpm until the voltmeter indicates approx. 0.7 volts.
Voltmeter Reading
5.
Increase and decrease the engine speed suddenly several times. When the speed is increased check that the voltmeter reads between 0.5 and 1.0
volts. When the speed is decreased check that the voltmeter reads between 0 and 0.4 volts.
6.
If not as specified, replace the oxygen sensor.
Self Diagnostic Checker Installed
7.
Connect the self diagnostic tester to the check connector, the oxygen sensor connector, and the negative battery terminal.
NOTE: Do not ground the test connector (Green:1-pin) during this test.
